What is the working principle of oil-free air compressor?

Oil-free air compressor is a miniature reciprocating piston compressor. Symmetrical crank-rocker mechanical structure driven by single shaft for motor. The main motion pair is a piston ring, and the auxiliary motion pair is an aluminum alloy cylindrical surface. Motion pairs are automatically lubricated by piston rings without adding any lubricant. The compressor makes the cylinder volume change periodically through the reciprocating motion of the crank rocker. When the motor runs once, the cylinder volume changes twice in opposite directions. When the positive direction is the expansion direction of the cylinder volume, the cylinder volume is vacuum, and the atmospheric pressure is greater than that in the cylinder. Air enters the cylinder through the outlet valve, which is the inhalation process; When the reverse direction is the volume reduction direction, the gas entering the cylinder is compressed and the pressure in the volume rises rapidly; When it is greater than atmospheric pressure, the exhaust valve opens, which is the exhaust process. The structure arrangement of single shaft and double cylinders makes the gas flow rate of the compressor twice that of the single cylinder at a certain rated speed, and the vibration and noise generated by the single cylinder compressor are well solved, and the overall structure is more compact. Working principle of the whole machine: air enters the compressor from the air inlet pipe, and the rotation of the motor makes the piston move back and forth to compress the air, so that the pressure gas enters the gas storage tank from the air outlet through the high-pressure hose, and the pointer of the pressure gauge rises to 8BAR, which is more than 8BAR. The pressure switch automatically closes and the motor stops working. At the same time, the solenoid valve reduces the air pressure in the compressor head to 0 through the pressure relief pipe. At this time, the air switch pressure and the gas pressure in the gas storage tank are still 8kg, and the gas passes through the filter pressure regulating valve. When the air pressure in the air storage tank drops to 5 kg, the pressure switch automatically opens and the compressor starts to work again.

Shanghai Chen Qu Electromechanical Technology Co., Ltd. has a large displacement integrated air compressor, which is a silent oilless air compressor designed according to the requirements of the majority of laboratory customers. The rated air pressure is 0.8/1.0 MPa; The compressed air is purified by the air storage tank, dryer and filter, and the air output from the air outlet has high quality and low water content. As long as the air outlet of the compressor is connected with the gas equipment through the connecting pipe, it can be used with various instruments and equipment that need pressurization. The machine has compact structure, small occupied space and simple installation. It can also save the cost of pipeline installation materials between units, and the pulley is installed at the bottom of the box body and can move at will, which is very simple and convenient.